| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem wherein Nd<SB>2</SB>Fe<SB>14</SB>B polycrystalline aggregated anisotropic particles are difficult to be regenerated as a magnet as compared with Sm-Co based or isotropic Nd<SB>2</SB>Fe<SB>14</SB>B powder. <P>SOLUTION: A regeneration method of a compound magnet having an inter-bridge macromolecule formation ability where polycrystalline aggregated anisotropic particles are isolated by single domain particle fine powder dispersed into a bond component B by melt blending, or a magnet mixed with anisotropic granule obtained by rough pulverization of their intermediates. Magnetic characteristics are kept by (1) pressing single domain particle fine powder of Sm<SB>2</SB>Fe<SB>17</SB>N<SB>3</SB>and polycrystalline aggregated anisotropic particles of Nd<SB>2</SB>Fe<SB>14</SB>B at 20-50 MPa under molten flow accompanied by slide, (2) setting the component B at 1.8 wt.% or above by alcohol soluble polyamide having a melting point of 70-90°C, (3) setting the ratio of fine powder covering a magnet powder fixing component A at 15-50 wt.%, and (4) setting the particle diameter of roughly pulverized anisotropic granule at 250 μm or less. <P>COPYRIGHT: (C)2007,JPO&INPIT |
